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The Professional, Scientific, and Technical Services sector comprises establishments that specialize in performing professional, scientific, and technical activities for others. These activities require a high degree of expertise and training. The establishments in this sector specialize according to expertise and provide these services to clients in a variety of industries and, in some cases, to households. Activities performed include: legal advice and representation; accounting, bookkeeping, and payroll services; architectural, engineering, and specialized design services; computer services; consulting services; research services; advertising services; photographic services; translation and interpretation services; veterinary services; and other professional, scientific, and technical services. This sector excludes establishments primarily engaged in providing a range of day-to-day office administrative services, such as financial planning, billing and recordkeeping, personnel, and physical distribution and logistics. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services.

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Showing 551–600 of 5736 bids that are currently: Active.

Denotes bidding opportunities that have been amended

California - US Due Date
Student Housing Balconies Inspection and Testing
54 - Professional, Scientific, and Technical Services
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Apr. 16, 2026
WATER ENGINEERING SERVICES
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 29, 2026
Facilities Master Plan
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 22, 2026
Solid Waste Consultant Engineering Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 29, 2026
RESERVOIR GROUND MONITORING SURVEY
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 23, 2026
Geotechnical, Material Testing and Construction Inspection Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 15, 2026
Engineering Services
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 27, 2026
Corporate: Dam Road Roundabout - SWPPP
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 16, 2026
Corporate: Dam Road Roundabout - Staking
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 16, 2026
Corporate: Dam Road Roundabout - Testing
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 16, 2026
Corporate: Dam Road Roundabout - Lead Compliance Plan
54 - Professional, Scientific, and Technical Services
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Apr. 16, 2026
Corporate: Mid-Pauba Groundwater Banking Progressive Design-Build - Survey
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
May. 01, 2026
Corporate: Mid-Pauba Groundwater Banking Progressive Design-Build - Testing & Special Inspections
54 - Professional, Scientific, and Technical Services
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May. 01, 2026
Corporate: Mid-Pauba Groundwater Banking Progressive Design-Build - Paleo & Archeo Monitoring
54 - Professional, Scientific, and Technical Services
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May. 01, 2026
Corporate: AUSTIN CREEK ES MODERNIZATION - Survey Staking
54 - Professional, Scientific, and Technical Services
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Apr. 14, 2026
Corporate: Pier 80 Improvements - SWPPP
54 - Professional, Scientific, and Technical Services
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Apr. 10, 2026
Corporate: TVUSD Margarita MS Modernization - Survey
54 - Professional, Scientific, and Technical Services
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Apr. 28, 2026
Professional A&E Services
54 - Professional, Scientific, and Technical Services
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May. 07, 2026
Engineering Services for the H Street Parking Structure Project
54 - Professional, Scientific, and Technical Services
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Apr. 17, 2026
General Engineering Contractors
54 - Professional, Scientific, and Technical Services
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Apr. 30, 2026
Professional Planning Services
54 - Professional, Scientific, and Technical Services
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Apr. 28, 2026
Backbone Bikeway Project
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
AIRPORT MASTER PLAN PREPARATION AND AIRPORT LAYOUT PLAN UPDATE
54 - Professional, Scientific, and Technical Services
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Apr. 27, 2026
Combat Survivor Evader Locator UHF Base Station Support Services
54 - Professional, Scientific, and Technical Services
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Apr. 30, 2026
Design-Build Services
54 - Professional, Scientific, and Technical Services
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May. 01, 2026
PARKING AREA AND TRAIL CONNECTIONS PROJECT
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
General Services Department
54 - Professional, Scientific, and Technical Services
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Apr. 21, 2026
Corporate: Sutter's Landing Park Improvements - Stormwater Pollution Control
54 - Professional, Scientific, and Technical Services
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Apr. 04, 2026
Engineering Services for Traffic Markings & Striping
54 - Professional, Scientific, and Technical Services
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Apr. 17, 2026
Building and Safety Services
54 - Professional, Scientific, and Technical Services
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May. 04, 2026
On-Call Surveying Services and Other Technical Services
54 - Professional, Scientific, and Technical Services
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Apr. 24, 2026
Public Safety Facilities Special Inspection & Materials Testing Services
54 - Professional, Scientific, and Technical Services
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Apr. 24, 2026
Corporate: North GA Ramp Reconstruction - GEOTECH ENGINEERS
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: North GA Ramp Reconstruction - SURVEYING
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: North GA Ramp Reconstruction - SWPP PLAN ONLY
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Measure K Roadway Improvement - SWPP PLAN ONLY
54 - Professional, Scientific, and Technical Services
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Apr. 23, 2026
Corporate: Develop Tidewater Day Use Area - QC\/QA
54 - Professional, Scientific, and Technical Services
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Apr. 30, 2026
Corporate: Develop Tidewater Day Use Area - Survey
54 - Professional, Scientific, and Technical Services
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Apr. 30, 2026
Corporate: Develop Tidewater Day Use Area - SWPPP
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 30, 2026
Corporate: SAN BERNARDINO COUNTY IN AND NEAR NEEDLES FROM 3.2 MILES EAST OF WEST JUNCTION ROUTE 95 - WPCP
54 - Professional, Scientific, and Technical Services
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Apr. 15, 2026
Corporate: SAN BERNARDINO COUNTY IN AND NEAR NEEDLES FROM 3.2 MILES EAST OF WEST JUNCTION ROUTE 95 - LCP
54 - Professional, Scientific, and Technical Services
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Apr. 15, 2026
Corporate: Crockett and Port Costa Overlays and Curb Ramps Project - SWPPP
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 28, 2026
Corporate: Pinole Creek Bank Erosion Repair - SWPPP
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 14, 2026
Corporate: Overlay Existing Pavement with HMA (Type A) \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 28, 2026
Corporate: Overlay Existing Pavement with HMA (Type A) \u2013 Time-Related Overhead (Wday)
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 28, 2026
Corporate: Overlay Existing Pavement with HMA (Type A) \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 28, 2026
Corporate: Overlay Existing Pavement with HMA (Type A) \u2013 Time-Related Overhead
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 28, 2026
Corporate: Installation of (5) 24x40 Portable Classroom Buildings & Site Work at Walnut Elementary Education Center - Land surveyors
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 09, 2026
Corporate: SANTA ROSA CITY SCHOOLS DISTRICT OFFICE - Surveying
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 16, 2026
NRTL Field Evaluation Services (Inspections) NASNI
54 - Professional, Scientific, and Technical Services
(to see the full NAICS category code login  or  upgrade)
Apr. 07, 2026

Showing 551–600 of 5736 bids that are currently: Active.